ata_kauai.c revision 144359 
1/*-
2 * Copyright 2004 by Peter Grehan. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 *    derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 */
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: head/sys/powerpc/powermac/ata_kauai.c 144359 2005-03-31 01:57:51Z grehan $");
30
31/*
32 * Mac 'Kauai' PCI ATA controller
33 */
34#include "opt_ata.h"
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/kernel.h>
38#include <sys/module.h>
39#include <sys/bus.h>
40#include <sys/malloc.h>
41#include <sys/sema.h>
42#include <sys/taskqueue.h>
43#include <vm/uma.h>
44#include <machine/stdarg.h>
45#include <machine/resource.h>
46#include <machine/bus.h>
47#include <sys/rman.h>
48#include <sys/ata.h>
49#include <dev/ata/ata-all.h>
50
51#include <dev/ofw/openfirm.h>
52
53#include <dev/pci/pcivar.h>
54#include <dev/pci/pcireg.h>
55
56#define  ATA_KAUAI_REGOFFSET	0x2000
57
58/*
59 * Offset to alt-control register from base
60 */
61#define  ATA_KAUAI_ALTOFFSET    (ATA_KAUAI_REGOFFSET + 0x160)
62
63/*
64 * Define the gap between registers
65 */
66#define ATA_KAUAI_REGGAP        16
67
68/*
69 * Define the kauai pci bus attachment.
70 */
71static  int  ata_kauai_probe(device_t dev);
72
73static device_method_t ata_kauai_methods[] = {
74        /* Device interface */
75	DEVMETHOD(device_probe,		ata_kauai_probe),
76	DEVMETHOD(device_attach,	ata_attach),
77	DEVMETHOD(device_detach,	bus_generic_detach),
78	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
79	DEVMETHOD(device_suspend,	bus_generic_suspend),
80	DEVMETHOD(device_resume,	bus_generic_resume),
81
82	{ 0, 0 }
83};
84
85static driver_t ata_kauai_driver = {
86	"ata",
87	ata_kauai_methods,
88	sizeof(struct ata_channel),
89};
90
91DRIVER_MODULE(ata, pci, ata_kauai_driver, ata_devclass, 0, 0);
92MODULE_DEPEND(ata, ata, 1, 1, 1);
93
94/*
95 * PCI ID search table
96 */
97static struct kauai_pci_dev {
98        u_int32_t  kpd_devid;
99        char    *kpd_desc;
100} kauai_pci_devlist[] = {
101        { 0x0033106b, "Uninorth2 Kauai ATA Controller" },
102        { 0x003b106b, "Intrepid Kauai ATA Controller" },
103        { 0x0043106b, "K2 Kauai ATA Controller" },
104        { 0, NULL }
105};
106
107static int
108ata_kauai_probe(device_t dev)
109{
110	struct ata_channel *ch;
111	struct resource *mem;
112	u_long startp, countp;
113	u_int32_t devid;
114	int i, found, rid, status;
115
116	found = 0;
117	devid = pci_get_devid(dev);
118        for (i = 0; kauai_pci_devlist[i].kpd_desc != NULL; i++) {
119                if (devid == kauai_pci_devlist[i].kpd_devid) {
120			found = 1;
121                        device_set_desc(dev, kauai_pci_devlist[i].kpd_desc);
122		}
123	}
124
125	if (!found)
126		return (ENXIO);
127
128	/*
129	 * This device seems to ignore writes to the interrupt
130	 * config register, resulting in interrupt resources
131	 * not being attached. If this is the case, use
132	 * Open Firmware to determine the irq, and then attach
133	 * the resource. This allows the ATA common code to
134	 * allocate the irq.
135	 */
136	status = bus_get_resource(dev, SYS_RES_IRQ, 0, &startp, &countp);
137	if (status == ENOENT) {
138		int irq;
139
140		/*
141		 * Aargh, hideous hack until ofw pci intr routine is
142		 * exported
143		 */
144		irq = 39; /* XXX */
145		bus_set_resource(dev, SYS_RES_IRQ, 0, irq, 1);
146
147		/*
148		 * Sanity check...
149		 */
150		status = bus_get_resource(dev, SYS_RES_IRQ, 0, &startp,
151		    &countp);
152		if (status == ENOENT ||
153		    startp != 39) {
154			printf("kauai irq not set!\n");
155			return (ENXIO);
156		}
157	}
158
159	ch = device_get_softc(dev);
160	bzero(ch, sizeof(struct ata_channel));
161
162        rid = PCIR_BARS;
163	mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
164        if (mem == NULL) {
165                device_printf(dev, "could not allocate memory\n");
166                return (ENXIO);
167        }
168
169	/*
170	 * Set up the resource vectors
171	 */
172        for (i = ATA_DATA; i <= ATA_STATUS; i++) {
173                ch->r_io[i].res = mem;
174                ch->r_io[i].offset = i*ATA_KAUAI_REGGAP + ATA_KAUAI_REGOFFSET;
175        }
176        ch->r_io[ATA_ALTSTAT].res = mem;
177        ch->r_io[ATA_ALTSTAT].offset = ATA_KAUAI_ALTOFFSET;
178
179        ch->unit = 0;
180        ch->flags |= ATA_USE_16BIT|ATA_NO_SLAVE;
181	ata_generic_hw(ch);
182
183        return (ata_probe(dev));
184}
185
186